Behind bars: Eddie Ray Routh is charged with two counts of murder after shooting Kyle and Chad Littlefield at a shooting range in Texas

The sister of the Iraq War veteran accused of killing a former Navy Seal sniper and his friend at a Texas shooting range made a terrified call to 911 after her brother allegedly 'confessed' to the crimes.

'My brother just came by here ... he's now left but he told me he committed murder and I am terrified for my life because I don't know if he'll come back here,' said Laura Blevins of her sibling, Eddie Ray Routh.

'He said he killed two guys. They went out to a shooting range,' Blevins added, according to the five-minute call which was obtained by the Dallas Morning News.

Blevins can be heard telling someone to 'get your shoes on, let's go' as she and her family flee the home.

The dispatcher instructs them to head to the police station where they'll be safe.

Blevins then had to hand the phone to her husband because she was too emotional to speak clearly.

The husband tells the dispatcher what kind of car Routh was driving and how he had recently left a mental hospital after being diagnosed with PTSD.

Routh had told his sister he had 'traded his soul for a new truck', it has been claimed.

Routh, 25, is charged with the murders of Chris Kyle, author
of the best-selling book 'American Sniper,' and his friend Chad
Littlefield at a shooting range in Glen Rose. He is on suicide
watch in the Erath County Jail, where he's being held on $3 million
bond.

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Routh had been taken to a mental hospital
twice in the past five months and told authorities that he was suffering
from post-traumatic stress disorder, police records show.

According to an Erath County arrest warrant affidavit obtained by WFAA-TV after the shootings Routh told his sister and brother-in-law that he 'traded his soul
for a new truck.'

Police
said that Routh was driving the truck of victim and ex-Navy SEAL Chris
Kyle at the time of arrest.

Routh, a member of the Marines Corps Reserve, was first taken to a mental hospital on Sept. 2 after he threatened to kill his family and himself, according to police records in Lancaster, where Routh lives.

Scroll down for video and 911 recording

Storm: Kyle wrote a graphic memoir, American Sniper, about his four bloody tours of Iraq, released last year

Authorities found Routh walking
nearby with no shirt and no shoes, and smelling of alcohol. Routh told
authorities he was a Marine veteran who was suffering from
post-traumatic stress disorder.

'Eddie stated he was hurting and that his family does not understand what he has been through," the report said.

Routh's mother told police that her son had been drinking and became upset when his father said he was going to sell his gun.

She said Routh began arguing with them and said he was going to "blow his brains out.' Police took Routh to Green Oaks Hospital for psychiatric care.

Dallas police records show Routh was
taken back to the same mental hospital in mid-January after a woman
called police and said she feared for Routh's safety.

Scene: The shooting took place at Rough Creek Lodge in Glen Rose, Texas earlier this month

Green Oaks will not release patient
information, citing privacy laws. Most people brought by police to the
hospital are required to stay at least 48 hours.

In May, Routh's mother reported a
burglary that included nine pill bottles and her son was involved,
according to a Lancaster police report. No other details were available.

Authorities say Routh, Kyle and
Littlefield arrived at the sprawling Rough Creek Lodge at about 3:15
p.m. Saturday, and a hunting guide called 911 about two hours later
after discovering the bodies. Kyle and Littlefield were shot multiple
times, and numerous guns were at the scene, according to the affidavit.

Jailers used a stun gun on Routh on
Sunday night after he appeared ready to assault them when they entered
his cell after he refused to return his food tray, the sheriff said.
Then they put Routh in a chair that restrains his arms and legs in his
solitary confinement cell, Bryant said.

Bryant said Routh has an attorney but hasn't met with him at the jail in Stephenville, about 75 miles southwest of Fort Worth.

Author: While in Iraq, Kyle survived being shot twice
and he lived through six separate IED explosions as his unit, Charlie
company of SEAL Team Three, saw significant combat. He wrote about his experiences in the best-selling book American Sniper

Kyle recorded more than 150 sniper kills - the most in U.S. military history - between 1999 and 2009

Attempts by The Associated Press to reach Routh's mother and sister were unsuccessful Monday.

Sundae Hughes, an aunt of Routh's,
said she watched him grow up but hasn't seen him since his high school
graduation in 2006. Hughes was in disbelief that her nephew could be
involved in such an incident.

'He has a kind heart (and was) someone willing to jump in and help, no matter what it was,' she said.

Routh joined the Marines in 2006 and
rose to the rank of corporal in 2010. His military specialty was
small-arms technician, commonly known as an armorer.

He had been stationed at Camp Lejeune, N.C., and served in Iraq from 2007-08 and in the Haiti disaster relief mission in 2010.

Caught: Police searched for Routh for hours following the shooting on Saturday afternoon but he was found after his sister called him in, as he fled to her house in Kyle's pick up truck and proceeded to confess to the killings

Criticism: Former Texas congressman Ron Paul posted a controversial message about the shooting

He is now in the individual ready
reserve. He could be called to duty, but it's uncommon unless he
volunteers, 1st Lt. Dominic Pitrone of the Marine Forces Services public
affairs office said.

Travis Cox, director of FITCO Cares
-- the nonprofit that Kyle set up to give in-home fitness equipment to
physically and emotionally wounded veterans -- said he believes that
Kyle and Littlefield were helping Routh work through PTSD.

Cox didn't know how Routh and Kyle knew each other. He said the shooting range event was not a FITCO session.

Kyle, 38, left the Navy in 2009 after
four tours of duty in Iraq, where he earned a reputation as one of the
military's most lethal snipers.

'American Sniper' was the No. 3 seller of paperbacks and hardcovers on Amazon as of Monday, and the hardcover was out of stock.

His publisher said Kyle was working on "American Gun: A History of the U.S. in Ten Firearms" with co-author William Doyle.

Littlefield, 35, was Kyle's friend, neighbor and "workout buddy," and also volunteered his time to work with veterans, Cox said.

FEARS FOR HER LIFE: LAURA BLEVINS' FULL QUOTES TO 911 DISPATCHER

'My brother just came by here. He's left now but he told me he committed a murder and I am terrified for my life because I don't know if he'll come back here.'

'Now listen, I don't know if hes being honest with me.'

'I'm really scared. He said he killed two guys, they went out to a shooting range. Like he's crazy, he's f-----g psychotic. I'm sorry for my language.'

'I don't know if he's on drugs or not but I know he's been, here talk, my husband will talk to you because I'm so nervous.'